Mizuno Running - Wave Maverick 4 (White/Orange/Silver) - Women's: Engineered for the runner with medium but flexible arches who demands excellent support and cushioning in a package that allows for the rigors of daily training and the stresses of intense workouts. 23mm/11mm (heel to forefoot ratio). Composite Wave in a fan-shaped configuration that utilizes two distinctly different materials for specific cushioning upon impact and performance support in the heel to midfoot phase of the gait cycle. The lateral side of the Mizuno Wave is made of rubber for excellent cushioning at heel strike, while the medial side of the plate is made of pebax for performance support. Midsole: 23mm/11mm (heel to forefoot ratio); 54C (Durometer target); Heel width is 82mm. Outsole: X-10 in the heel for durability; solid rubber and blown rubber in the forefoot for durability, cushioning, and flexibility. Shoe weighs 8.9oz.